Optical coupler and amplifier

Details Optical coupler and amplifier Optical coupler and amplifier

1994-03-22

1995-05-02

Ullah, Akm E.

Optical waveguides

With optical coupler

Particular coupling structure

G02B 600, G02B 636

Patent

active

054127467

ABSTRACT:
A coupler (1) made of optical fibers is provided with a device for detecting the light that is carried in one of the fibers at the coupler output in operation. For that purpose, the coupler (1) embedded in an enclosure (2) has at the coupler output a lens body (8) enclosing the optical fiber (pigtail 6) and a detector (9) aimed at the lens body (8). With the detector, during coupler operation, lost light dissipated via the primary coating of the optical fiber is received by the lens body (8 ) and carried by the detector (9) to an electrical evaluator.

REFERENCES:
patent: 4398795 (1983-08-01), Palmer
patent: 4557552 (1985-12-01), Newton et al.
patent: 4786130 (1988-11-01), Georgiou et al.
patent: 4810052 (1989-03-01), Fling
patent: 5031984 (1991-07-01), Eide et al.
patent: 5071214 (1991-12-01), Jacob et al.
patent: 5315675 (1994-05-01), Dennis et al.
Makoto Shimizu, "Compact And Highly Efficient Fiber Amplifier Modules Pumped By A 0.98-.mu.m Laser Diode", pp. 291-296, Journal Of Lightwave Technology, vol. 9, No. 2, Feb. 1991.
Nobuyuki Kagi, "Temperature Dependence Of The Gain In Erbium-Doped Fibers", pp. 261-265, Journal Of Lightwave Technology, vol. 9, No. 2, Feb. 1991.
Journal Of Lightwave Technology, Bd. 9, No. 2, Feb. 1991, pp. 261-265, Kagi et al, "Temperature Dependence Of The Gain In Erbium-Doped Fibers".

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